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3 years ago

HELP ASAP PLEASE!! Thank you so much if you do, this assignment is due in an hour.

Mathematics

2 answers:

klasskru [66]3 years ago

8 0

Question 8.
Lateral surface area of cylinder = 2πrh

The answer is B.) 2 • π • 3 • 7

Question 9.
Total surface area = 6 • (area of square)

The answer is D.) 6 (3 • 3)

andreyandreev [35.5K]3 years ago

7 0

Answer:

9 : D bc there are 6 cubes / squares then times tht by 3.3 cuz ur doin area.

8 : A

Step-by-step explanation:

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Read 2 more answers

Write the radian measure of each angle with the given degree measure explain your reasoning

nexus9112 [7]

Answer:

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Step-by-step explanation:

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3 years ago

What is a decomposition reaction?

yaroslaw [1]

Answer:

11-6√3 = a -b√3

where a=11 and b =6

Step-by-step explanation:

Step(i):-

Given

$\frac{5+2\sqrt{3} }{7+4\sqrt{3} }$

Rationalize

= $\frac{5+2\sqrt{3} }{7+4\sqrt{3} } X \frac{7-4\sqrt{3} }{7-4\sqrt{3} }$

= $\frac{(5+2\sqrt{3})(7-4\sqrt{3} ) }{7^{2} -(4\sqrt{3})^{2} }$

= $\frac{(5+2\sqrt{3})(7-4\sqrt{3} ) }{49-16(3) }$

= $\frac{(5+2\sqrt{3})(7-4\sqrt{3} ) }{1 }$

Step(ii):-

Multiply

${(5+2\sqrt{3})(7-4\sqrt{3} ) }$

= 5 × 7 - 5×4√3 + 2√3 ×7 - 2√3 × 4√3

= 35 -20√3+ 14√3-8×3

= 35 - 6√3 -24

= 11-6√3

6 0

3 years ago